[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [APD] Most tapwater has little CO2
>This thread started with someone using well water and then got smudged over
>into a general discussion about water changes providing CO2 that might
>include any tapwater. Most municipal water systems try to remove as much
>CO2 as possible because they want the water to be less acidic on the pipes.
>Our water comes out of the tap at pH 9.8, but then drops to pH 7.6 when
>left out as it absorbs CO2 from the air. So doing water changes with water
>directly from the tap in an effort to provide CO2 would be
>counter-productive. All tapwater isn't the same.
Fwiw, all tapwater I've ever had: Burlingto, Waterloo, Toronto Ont,
and Los Angeles (PV) all had serious amounts of CO2. So does my well
water here. I think it's the pressurization that does this, which you can
easily demonstrate to yourself with a python.
/"\ / http://lists.aquaria.net
\ / ASCII RIBBON CAMPAIGN / Killies, Crypts, Aponogetons
X AGAINST HTML MAIL / http://killifish.vrx.net
/ \ AND POSTINGS / http://www.vrx.net
Aquatic-Plants mailing list
Aquatic-Plants at actwin_com